Title :
Alpine landslide periodical survey
Author :
Strozzi, Tazio ; Wegmüller, Urs ; Werner, Charles ; Wiesmann, Andreas
Author_Institution :
Gamma Remote Sensing, Switzerland
Abstract :
Potential and limitations of differential SAR interferometry for the periodical survey of Alpine displacements are investigated. For the Alpine territory, which is characterized by low vegetation, C-band differential SAR interferometry shows a relatively high coherence during the snow-free season permitting the detection and monitoring of unstable slopes on a regular basis. Limitations to the spatial coverage arise from decorrelation over forested and snow covered areas and from layover and shadowing caused by the very rugged topography. Significant results in the Swiss Alps using ERS-1/2 SAR data are used as support to our investigations.
Keywords :
geomorphology; remote sensing by radar; spaceborne radar; synthetic aperture radar; Alpine displacements; Alpine landslide periodical survey; Alpine territory; Berne Canton; C-band differential SAR interferometry; ERS-1/2 SAR data; Grimselpass; Matter Valley; Swiss Alps; Switzerland; Wallis; forested areas; rugged topography; snow covered areas; snow-free season; unstable slopes; Costs; Decorrelation; Interferometry; Monitoring; Scattering; Shadow mapping; Snow; Surfaces; Terrain factors; Vegetation mapping;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2002. IGARSS '02. 2002 IEEE International
Print_ISBN :
0-7803-7536-X
DOI :
10.1109/IGARSS.2002.1027272
